233975539395081 has 27 divisors (see below), whose sum is σ = 371482626606637. Its totient is φ = 141803051283960.

The previous prime is 233975539395049. The next prime is 233975539395109. The reversal of 233975539395081 is 180593935579332.

The square root of 233975539395081 is 15296259.

It is a perfect power (a square), and thus also a powerful number.

233975539395081 is a `hidden beast` number, since 2 + 3 + 3 + 9 + 7 + 5 + 539 + 3 + 9 + 5 + 0 + 81 = 666.

It is not a de Polignac number, because 233975539395081 - 2⁵ = 233975539395049 is a prime.

It is a super-2 number, since 2×233975539395081² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (233975539395011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 504544786 + ... + 505008308.

Almost surely, 2^{233975539395081} is an apocalyptic number.

233975539395081 is the 15296259-th square number.

233975539395081 is the 7648130-th centered octagonal number.

It is an amenable number.

233975539395081 is a deficient number, since it is larger than the sum of its proper divisors (137507087211556).

233975539395081 is an frugal number, since it uses more digits than its factorization.

233975539395081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927074 (or 463537 counting only the distinct ones).

The product of its (nonzero) digits is 826686000, while the sum is 72.

The spelling of 233975539395081 in words is "two hundred thirty-three trillion, nine hundred seventy-five billion, five hundred thirty-nine million, three hundred ninety-five thousand, eighty-one".